Journal
LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 59, Issue 2, Pages 1093-1099Publisher
ELSEVIER
DOI: 10.1016/j.lwt.2014.05.061
Keywords
Nanoparticles; Nisin; Sustained release; Antimicrobial; Tomato juice
Categories
Funding
- Department of Science and Technology (DST), New Delhi, India
- DST [IF120488 (2012)]
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Nisin loaded tripolymeric nanoformulation was prepared using three biocompatible polymers i.e. chitosan, sodium alginate and pluronic F68 which are permitted for use in food. The process variables were optimized to obtain efficient encapsulation and appropriate particle size. Mean particle size of nanoparticles was determined to be 208.2 nm with particle size analyzer. TEM (Transmission Electron Microscope) observations revealed spherical shape and size in the range of 130-170 nm. Fourier transform-infrared analysis did not reveal any chemical interaction among the constituents in the composite nanoparticles. In-vitro release studies held for two weeks showed initial burst release followed by a sustained release of nisin from the formulation. Further studies demonstrated that biological activity of nisin was prolonged by its encapsulation in polymeric nanoparticles. (C) 2014 Elsevier Ltd. All rights reserved.
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